xmobar on slackware

Hi, I am using Xmonad on Slackware and need xmobar to work. However, the
bug looks like this:
xmobar: user error (createFontSet)
It should be working fine. I tried installing a slackbuild, then I tried
installing it from source, but neither worked. Howeever, Dzen2 works as
one would expect. I also need UTF8 support.
Thanks